THERMAL-SHOCK RESISTANCE OF ALUMINA SIALON COMPOSITES

被引:4
作者
TAKATORI, K
机构
[1] Toyota Central Research and Development Laboratories Inc., Aichi, 480-11, Nagakute
关键词
D O I
10.1007/BF01154688
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The thermal shock behaviour of pure alumina and an alumina sialon composite was examined. The critical temperature difference of the ther.mal shock, DELTAT(C), had a good relationship with the calculated thermal shock resistance parameter, R. The thermal shock resistance of the composite was remarkably improved by simple modification, such as oxidation at 1400-degrees-C for 100 h. The oxide layer, with porous microstructure, consisted mainly of mullite and a small amount of alumina. The DELTAT(C) of pure alumina, the composite and the oxidized composite was 210, 225 and 360-degrees-C, respectively. This improvement was considered to be due to the characteristics of the oxide layer, which had high strength as well as a low elastic constant and a low thermal expansion coefficient.
引用
收藏
页码:2115 / 2118
页数:4
相关论文
共 5 条
[2]  
HASSELMAN DP, 1970, AM CERAM SOC BULL, V49, P1033
[3]   THERMAL-SHOCK BEHAVIOR OF DUPLEX CERAMICS [J].
LUTZ, EH ;
SWAIN, MV ;
CLAUSSEN, N .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1991, 74 (01) :19-24
[4]  
Nakayama J, 1974, FRACTURE MECHANICS C, P759
[5]   PRESSURELESS SINTERING AND MECHANICAL-PROPERTIES OF ALUMINA-SIALON COMPOSITES [J].
TAKATORI, K .
JOURNAL OF MATERIALS SCIENCE, 1991, 26 (16) :4484-4490